Oxygen evolution on manganese–molybdenum oxide anodes in seawater electrolysis

Fujimura, Kaori; Matsui, Teppei; Izumiya, Koichi; Kumagai, Naokazu; Akiyama, Eiji; Habazaki, H.; Kawashima, A.; Asami, K.; Hashimoto, Kôji

doi:10.1016/s0921-5093(99)00100-8

Cited by 68 publications

(41 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More details about IrO 2 /Ti preparation have been given elsewhere. [7][8][9][10][11][12][13][14][15][16] The IrO 2 /Ti samples were then cut into pieces of 1 Â 16 Â 7:5 mm for anodic deposition. The real surface area of the punched titanium anode was 75% of the apparent surface area and hence was 1.8 cm 2 .…”

Section: Preparation Of Iro 2 /Ti Substratementioning

confidence: 99%

“…[10][11][12][13] The addition of molybdenum was found more beneficial than tungsten from view points of both stability and oxygen evolution efficiency. 16) Further research resulted in finding that formation of triple oxide by the addition of tungsten to Mn-Mo oxide improved its performance during electrolysis of alkaline and acidic NaCl solutions.…”

Section: Introductionmentioning

confidence: 98%

“…[6][7][8][9][10][11][12][13][14][15] These anodes were prepared by thermal decomposition and anodic deposition methods, where the latter method is more effective in producing durable materials for oxygen evolution reaction during seawater electrolysis.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mn-Mo-W Oxide Anodes for Oxygen Evolution in Seawater Electrolysis for Hydrogen Production

2009

View full text Add to dashboard Cite

IrO 2 /Ti-supported -MnO 2 -type Mn-Mo-W triple oxide anodes were prepared by anodic deposition in MnSO 4 -Na 2 MoO 4 -Na 2 WO 4 -H 2 SO 4 solutions. The performance of anodes for oxygen evolution reaction during electrolysis of 0.5 kmol m À3 NaCl solution was examined at 1000 Am À2 . The stability, kinetics and physicochemical properties of the oxide deposit anodes were characterized by iR-corrected galvanostatic polarization, gravimetric, X-ray photoelectron spectroscopy and X-ray diffraction techniques. The addition of tungsten to the Mn-Mo oxide enhanced the oxygen evolution efficiency of anodes. electrolyte of pH 0 showed the best performance among anodes prepared in this work. The high performance was attributed to the formation of single phase triple oxide with optimum composition, thickness and defect concentration. Tungsten addition beneficially exerts its effect via increasing the electrical conductivity of oxide deposits. The deposition mechanism of the oxides was discussed in terms of stability and population of Mn 3þ species at the anode/electrolyte interface.

show abstract

Section: Preparation Of Iro 2 /Ti Substratementioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Mn-Mo-W Oxide Anodes for Oxygen Evolution in Seawater Electrolysis for Hydrogen Production

2009

View full text Add to dashboard Cite

show abstract

“…[8][9][10][11][12][13][14][15][16][17][18] These anode materials were prepared by thermal decomposition and anodic deposition. The effects of various additives were examined with thermal decomposition methods, [8][9][10] and the enhancement of the oxygen evolution efficiency was found by additions of molybdenum, tungsten and some other elements.…”

Section: Introductionmentioning

confidence: 99%

“…9,10) Based on these experiments anodic deposition was achieved to form -MnO 2 -type oxides containing effective additives on the IrO 2 /Ti substrate. [11][12][13][14][15][16][17][18] Manganese-molybdenum double oxide anodes, Mn 1Àx Mo x O 2þx , showed the 100% oxygen evolution efficiency in the electrolysis of 0.5 kmol m À3 NaCl at 1000 Am À2 and 303 K. It is desirable for improvement of the energy efficiency to electrolyze seawater at higher temperatures. However, temperature increase resulted in a pink or fine pale coloration of the solution due to anodic dissolution of the manganesemolybdenum double oxide anodes in the form of permanganate and molybdate ions during seawater electrolysis.…”

Section: Introductionmentioning

confidence: 99%

Anodically Deposited Mn-Mo-Fe Oxide Anodes for Oxygen Evolution in Hot Seawater Electrolysis

et al. 2003

View full text Add to dashboard Cite

show abstract

Methanation of carbon dioxide on Ni/(Zr-Sm)Ox catalysts

Habazaki

Yamasaki

Kawashima

et al. 2000

Appl. Organometal. Chem.

View full text Add to dashboard Cite

Ni/ZrO 2 and Ni/(Zr 0.9 Sm 0.1 ) 0.95 catalysts were prepared by wet impregnation, and their catalytic activities for methanation of carbon dioxide were compared with the highly active catalysts prepared from amorphous nickel-zirconiumsamarium alloys. The Ni(Zr 0.9 Sm 0.1 )O 1.95 catalyst showed higher activity for methanation of carbon dioxide than the samarium-free Ni/ZrO 2 catalyst with the same nickel content. The higher activity of the samarium-containing catalyst is associated with the formation of the (Zr-Sm)O x oxide with a tetragonal ZrO 2 structure, similar to the Ni/(Zr-Sm)O x catalysts prepared from the amorphous nickel-zirconium-samarium alloys. An increase in the nickel content from 30 to 60 mol% in cationic percentage results in a decrease in the activity, mainly because of a decrease in the surface area of the catalysts, although the activity of the catalysts prepared from amorphous nickel-zirconium-samarium alloys increases with the nickel content. Further, it was found that the activities of the Ni/(ZrSm)O x catalysts prepared from the amorphous nickel-zirconium-samarium alloys are higher than those prepared by wet impregnation. Uniform dispersion of nickel in the catalysts prepared from amorphous single-phase alloys should be one of the reasons for the extremely high activity of the catalysts.

show abstract

Oxygen evolution on manganese–molybdenum oxide anodes in seawater electrolysis

Cited by 68 publications

References 11 publications

Mn-Mo-W Oxide Anodes for Oxygen Evolution in Seawater Electrolysis for Hydrogen Production

Mn-Mo-W Oxide Anodes for Oxygen Evolution in Seawater Electrolysis for Hydrogen Production

Anodically Deposited Mn-Mo-Fe Oxide Anodes for Oxygen Evolution in Hot Seawater Electrolysis

Methanation of carbon dioxide on Ni/(Zr-Sm)Ox catalysts

Contact Info

Product

Resources

About